Wiklund Helena, Nygren Arne, Pleijel Fredrik, Sundberg Per
Department of Zoology, Göteborg University, PO Box 463, Göteborg SE-405 30, Sweden.
Mol Phylogenet Evol. 2005 Nov;37(2):494-502. doi: 10.1016/j.ympev.2005.07.005. Epub 2005 Aug 19.
The phylogeny of Aphroditiformia, benthic polychaetes carrying dorsal elytra, is assessed from nuclear 18S rDNA, mitochondrial cytochrome c oxidase subunit I (COI), and 31 morphological characters. Two non-elytrabearing taxa, Palmyra and Pisione, are included to assess their relationship to the elytrabearers. The data are analysed both separately and combined, with parsimony, maximum likelihood and Bayesian analyses. In total, 19 terminal taxa are examined, including 12 elytrabearing taxa from all scale-worm groups, Palmyra, Pisione, and five outgroup taxa. The results show that Palmyra and Pisione are nested within Aphroditiformia. Palmyra is sister to Aphrodita, and both Pisione and Pholoe are positioned within Sigalionidae, suggesting that both family names Pisionidae and Pholoidae should be treated as junior synonyms of Sigalionidae.
本文通过核18S核糖体DNA、线粒体细胞色素c氧化酶亚基I（COI）以及31个形态学特征，对携带背侧鞘翅的底栖多毛纲鳞沙蚕目进行了系统发育分析。研究纳入了两个不具鞘翅的类群——巴尔米拉虫属和皮西昂虫属，以评估它们与具鞘翅类群的关系。数据分别进行了分析，并通过简约法、最大似然法和贝叶斯分析进行了合并分析。总共检查了19个终端类群，包括来自所有叶须虫类群的12个具鞘翅类群、巴尔米拉虫属、皮西昂虫属以及5个外类群。结果表明，巴尔米拉虫属和皮西昂虫属嵌套在鳞沙蚕目内。巴尔米拉虫属是鳞沙蚕属的姐妹群，皮西昂虫属和鳞叶虫属都位于叶须虫科内，这表明皮西昂虫科和鳞叶虫科这两个科名应被视为叶须虫科的次同物异名。
